major refactor of main.go

services/weather.go

@@ -0,0 +1,40 @@
+package services
+
+import (
+	"encoding/json"
+	"fmt"
+	"go-weather/models"
+	"net/http"
+)
+
+type WeatherService struct {
+	apiKey string
+}
+
+func NewWeatherService(apiKey string) *WeatherService {
+	return &WeatherService{apiKey: apiKey}
+}
+
+func (s *WeatherService) FetchWeather(city string) (models.WeatherResponse, error) {
+	url := fmt.Sprintf(
+		"https://api.openweathermap.org/data/2.5/weather?q=%s&appid=%s&units=imperial",
+		city, s.apiKey,
+	)
+	resp, err := http.Get(url)
+
+	if err != nil {
+		return models.WeatherResponse{}, fmt.Errorf("request failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return models.WeatherResponse{}, fmt.Errorf("API returned status %d", resp.StatusCode)
+	}
+
+	var weather models.WeatherResponse
+	err = json.NewDecoder(resp.Body).Decode(&weather)
+	if err != nil {
+		return models.WeatherResponse{}, fmt.Errorf("failed to parse response: %w", err)
+	}
+	return weather, nil
+}